This calculates delta (difference of timestamps from various
entry/exit points from events recorded) from the trace output,
which is produced by using the perf script command, which in turn,
uses the perf.data file produced by using the perf record command,
a set of utilities,which is provided under the package perf-tools
$ sudo ./install
$ perf_script_processor <dir path where either perf.data or perf_data.csv exists>
perf_data.csv is produced by using the perf_script_processor command. This is incase, one has already produced the csv file from a previous run of postprocessor script.
GPL V3